メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.57448778637 43.3298639397361, 145.573935429028 43.3302693617527, 145.573419743187 43.33065493998, 145.572324750241 43.3298942099018, 145.572866575301 43.3294792566596, 145.573376121877 43.3290942114334, 145.573421277844 43.3290673728968, 145.57448778637 43.3298639397361)) ^^http://www.opengis.net/ont/geosparql#wktLiteral